Ty Pennington is back from his summer vacation (and he even brought some home movies!) and ready to start another season of Extreme Makeover: Home Edition. He tells Rach why he loves doing the show so much. "Seeing that spark of humanity and that human spirit is what keeps me going," Ty says. "To be honest, I get tired sometimes! But it's the human spirit, and seeing that you really can do something amazing and seeing everyone else feeding off that energy makes you realize that anything is possible if you put your mind to it."

In addition to changing the lives of those on Extreme Makeover, Ty is also helping others deal with a disorder that oftens goes undiagnosed -- ADHD. "It's such an important thing in my life, and I really wouldn't be here if I hadn't gotten treatment for it," he says. Ty teamed up with Shire for "ADHD Experts on Call," where for one day people were able to pick up the phone and talk to experts from 8 a.m. to midnight. "It's really important for anybody who thinks their kid might have it," Ty explains, "or even adults who might have it." For more information, check out www.adhdsupport.com.